Well, I've myself posted on my blog a few examples on machine translation. The latest was "How to be Smart and Fetid #1 with Machine Translation" (http://www.seo-translator.com/be-smart-stinky-1-with-machine-translation/)

This is a very funny article, which shows how machine translation is far from being reliable when one needs an accurate translation. People shoudl always use a professional service, be it for legal, technical or medical translation.